<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>控制小球移动</title>
<link href="example28.css" rel="stylesheet" type="text/css" />
<script src="example28.js" type="text/javascript"></script>
</head>
<body>
	<div id="box" class="box">
    	<img id="img" src="images/ball.png" style="left:50px; top:50px;" />
    </div>
</body>
</html>

